Filter attachment for radiators



Jan. 3, 1950 H. E. MALME FILTER ATTACHMENT FOR RADIATOR-3 2 Sheets-Sheet1 Filed Aug. 13, 1947 fla 0E Ma Zme Jan. 3, 1950 H. E. MALME FILTERATTACHMENT FOR RADIATORS 2 Sheets-Sheet 2 Filed Aug. 15 1947 .1 II rneyxPatented Jan. 3, 1950 UNITED STATES PATENT OFFICE FILTER ATTACHMENT FORRADIATORS Hugo E. Malme, Linden, N. J.

Application August 13, 1947, Serial No; 768,345

I 4 Claims. 1.

This invention relates to an attachment for filtering the air heated bythe radiators of a heating system of a dwelling or other enclosure forextracting dust and dirt from the air which is heated and caused tocirculate by the heat given off by a radiator to thereby minimize theamount of dirt and dust adjacent a radiator and to maintain the areaadjacent the radiator, including curtains, walls and blinds in a cleanerand more sanitary condition.

Still another object of the inventionis to provide an air filter whichis especially adaptable to recessed radiators, but which is capable ofuse with heating radiators generally.

A further object of the invention is to provide an improved constructionof filter including means to permit the filtering means to be readilyremoved and replaced.

A further object of the invention is to provide a filter which willfunction for filtering the air drawn into proximity to the lower portionof a radiator by the heat radiated therefrom and for additionallyfiltering the air, after heating, when expelled from the upper part ofthe radiator by the natural tendency of the heated air to rise.

Various other objects and advantages of the invention will hereinafterbecome more fully apparent from the following description of thedrawings, illustrating, a preferred embodiment thereof, and wherein:

Figure 1 is a front elevational view showing a recessed radiator andwith the filter attachment applied thereto;

Figure 2 is av vertical sectional. View, partly in side elevation,taken, substantially along a plane as indicated by the line 2-2- ofFigure 1;

Figure 3 is a plan view, partly broken away, showing the lower, intakefilter on an enlarged scale;

Figure 4 is aperspective view, partly broken away thereof;

Figure 5 is a top plan view of the upper filter support;

Figure 6 is a side elevational view thereof, looking toward the outerside of the filter support and showing the filter mounted therein;

Figure 7 is an end elevationalview looking toward one end of the filtersupport;

Figure 8 is a similar view looking toward the the opposite end thereof,and

Figure 9 is an exploded perspective view of the various parts of theupper filter and filter support, shown disconnected.

Referring more specifically to the drawings, for the purpose ofillustrating one preferred adaptation and use of the air filter,constituting the invention and designated generally land I], the numeral[2' designates a conventional hot water or steam radiator of a heatingsystem of a dwelling or other enclosure and which is shown a closure idfor closing the open front of the recessed portion l5 of said wall l3.The closure [4 may be of any conventional construction and ordinarilyincludes an opening it in the lower portion thereof through which coldair from adjacent the fioor ii, on which the radiator I2 is supported,may be drawn into the lower portion of said radiator by the heat beingradiated therefrom. The closure I4 is also provided with a grilledopening l3 adjacentits upper edge through which the heated air from theradiator I2 is emitted back into the room of which the wall l3 and fioorI'l form a part, and which grilled opening 18 may have the grill workthereof arranged as is conventional, for deflecting the heated air inany desired direction therefrom.

The upper filter I0, for filtering the air after heating by the radiatorI2 andwhich is exhausted through the grilled opening l8, as best seen inFigures 5 to 9, includes a holder, designated generally 59- comprising aplate having an elongated, relatively wide and substantially fiatportion 25 which extends through a slotted opening 2i in the upperportion of the recess closure i i and above its grilled opening I8 andwhich is supported thereby and by the inner portion of the plateEiiresting upon the top of the radiator l2. The outer, longitudinal edgeof the filter support is, which is disposed outwardly of the closure l4and adjacent thereto, is bent upwardly to define a downwardly opening,substantially semicircular part 22, which extends from end to endof saidsupport 59 and the open bottom of which is disposed in substantially thesame plane as the plate 2a Asap-shaped end member, designated generally23 including a disk portion 24 and an annular flange 25 projecting fromone side thereof, is mounted in and fixedly secured to one endof-thesemi-circular portion 22 and so that the upper half of the fiange 25 isdisposed insaid endof the semi-circular portion 22, and the other halfof re flange 25 depends downwardly therefromasdoes the lower-half of thedisk 24. The opposite end of the semi-cylindrical portion 22 is closedby an end member 26, as best seen in Figure 9, having a disk 2'! of adiameter substantially corresponding to the cap 23 and a semi-circularflange '28 extending substantially half .thedistance therearound andwhich is disposed'within said opposite end of the semi-cylindricalportion 22- and suitably secured thereto, as Icy-welding, and so thatthe: ends of the flange 28 will terminate atlapproximately the openbottom of the portion 22; Thedisk 2'! is provided with acentral openingZQ -forming a journal-fora shaft toh'avinga restricted portion whichextends inwardly -'tl1'ere-- through and which is suitably secured,adjacent its inner end and inwardly of the disk 21, to

a retaining member, designated generally 3| and which substantiallycorresponds to the end member 26 and includes a disk 32 which iscentrally connected to the shaft 30, and a semicircular flange 33, whichprojects from the side thereof, away from the shaft 30 or inwardly ofthe semi-cylindical portion 22. A washer 34 is preferably interposedbetween the disk portions 21 and 32 and a knurled knob 35 is fixed tothe outer end of the shaft 30.

A filter, designated generally 36 and best illustrated in Figure 9, isadapted to be detachably mounted in the semi-cylindrical portion 22 bythe retaining end members 23 and 26, 3|. The filter 36.includes anelongated cylinder 31 formed of mesh wire fabric, preferably copperwire, which is covered by a cylinder 38 of cloth, such as cheeseclothand which is lightly oiled. To apply the filter 36 to the upper filtersupport l9, one end thereof is inserted into the retaining flange 25 andwith the retaining member 3| disposed with its flange 33 within theflange 28, it will be readily apparent that the opposite end of thecylindrical filter 36 can be disposed, as shown in Figure 6 and afterwhich by rotating the knurled knob 35 a one-half turn, the retainingmember 3| will be rotated a half turn for positioning its flange 33under the lower part of said last mentioned end of the filter 38 fordetachably retaining it in its position of Figure 6.

Accordingly, it will be readily apparent that the heated air in passingoutwardly through the grilled opening i8, will due to its heatedcondition, tend to rise as soon as it leaves the grilled opening I8, asindicated by the arrows in Figure 2, located adjacent said opening, andin so doing will wipe against or pass through a portion of the filter 36and so that dust, dirt and other foreign matter carried by the air willbe separated therefrom by the lightly oiled filter cloth 38, When thefilter cloth 38 has become dry or soiled to an extent to prevent itproperly performing its intended function, the knob 35 can be rotated ahalf a turn to position the flange 38 in an uppermost position and sothat the filter 36 can be readily removed and replaced, or so that a newfilter cloth 33 can be applied to the filter cylinder 37, and the filter36 thereafter reapplied, as previously described.

In order to maintain the radiator I2 in a clean and sanitary conditionand to twice filter the air heated thereby, the second filter H isprovided and which includes an elongated, substantially rectangularframe, designated generally 39, which may be formed from a rod bent intothe desired shape, and the ends of which are connected by a coupling orsleeve member 40. A cylinder or sleeve of filter material 4!, such ascheesecloth is stretched over the frame 39 and said filter II is thendetachably secured in the bottom, intake opening [6 and so that the coldair drawn into the recess l will be filtered in passing through thefilter cloth 4|.

Obviously, the filters l0 and ll may be used separately if desired, andthe filter It] may be employed with any radiator, whether recessed ornot, and with non-recessed radiators the plate 20 may be suitablysecured, as by soldering or welding to the upper surface of the radiatorI2 or may be detachably fastened thereto in any desired manner, andvarious other modifications and changes are likewise contemplated andmay obviously be resorted to, Without departing from '4 the spirit orscope of the invention as hereinafter defined by the appended claims.

I claim as my invention:

1. A filter for heating radiators, comprising a filter support having anelongated portion adapted to be supported on the upper surface of aheating radiator and longitudinally thereof, said support having asemi-cylindrical, downwardly opening portion disposed outwardly of oneside of the radiator and including end portions provided with inwardlyprojecting flanges, a cylindrical filter member mounted in saidsemicylindrical portion and detachably engaged and supported by theflanges of said end portions, and one of said end portions includingmanually rotatable means and a rotatable section carrying asemi-cylindrical portion of the flange thereof and movable to positionsfor engaging or disengaging an end of the cylindrical filter fordemountably supporting it in the semi-cylindrical portion of thesupport.

2. A filter for heating radiators, comprising a filter support adaptedto be mounted on the top surface of a heating radiator and having aportion disposed beyond one side thereof and extending lengthwise of theradiator, said support portion having filter retaining end membersmounted thereon, a cylindrical filter demountably supported by said endmembers, and one of said end members including a rotatably mounted,semicylindrical and inwardly extending flange for engaging thecylindrical filter in one position thereof and for disengaging thefilter in another position thereof for demountably supporting the filterbetween said end members.

3. An air filter for heating radiators, comprising a filter supportadapted to be mounted on the upper surface of a radiator and having aportion extending outwardly from a side of the radiator, filterretaining members supported by said portion of the filter support anddisposed outwardly of said side of the radiator and longitudinallythereof, one of said filter retaining members comprising a cap-shapedmember having an inwardly extending flange, the other of said retainingmembers comprising a rotatably mounted disk having an inwardlyextending, substantially semi-circular flange, and a cylindrical, porousfilter member supported between said filter retaining members, saidfilter being demountable from the retaining members by the rotation ofthe disk and semi-cylindrical flange through an arc of degrees forpositioning said flange above an end of the cylindrical filter.

4. A filter as in claim 3, said support including a hood ofsemi-circular cross section and disposed in downwardly opening positionand to the ends of which said filter retaining members are connected.

HUGO E. MALME.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 344,794 Miller Jan. 26, 1886842,914 Schafer Feb. 5, 1907 1,490,101 Garrett Apr. 15, 1924 1,777,210Lebherz Sept. 30, 1930 1,782,374 Walls Nov. 18, 1930

